Originally Posted by Rupturez

Yeah I did, I already had the introduction. I'm positive I screwed up while selling the excessive amount of 3*'s I got from the event gacha.

That's why I immediately Lock new Knights (before anything else), and then, when I sell Knights, I always use 2*/3* Filters to be sure to sell only 2*/3*.

(Anyway I guess the Support will give you her if you take the time to contact them.)